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1. LR-3A Digital Oxygen Index Tester(Have temperature controller)
2. scope of application:

It is suitable for the determination of the combustion performance of plastics, rubber, fiber, foam plastics, film and textile materials

LR-3A Digital Oxygen Index Tester(Have temperature controller)

Ii. Main technical parameters

1. Using imported oxygen sensor, digital display oxygen concentration without calculation, more accurate and more accurate, range 0-99%
2. The built-in temperature controller to control the temperature, the control range: 23 ℃ ±2 ℃
3. Digital resolution: 0.1%
4. Measurement accuracy: 0.4 grade
5. Flow regulation range: 0-10l /min (60-600l /h)
6. Response time: < 5S
7. High temperature resistant quartz glass tube, inner diameter 75 ㎜ height 480 mm or more
8. Gas flow rate in combustion cylinder: 40mm ±2mm/s
9. Pressure gauge accuracy 2.5, resolution: 0.01mpa
10. The flowmeter: 1-15 l/min (60-900 l/H) is adjustable, test environment: the environment temperature: room temperature ~ 40 ℃;, relative humidity: 70%;
11. Input pressure: 0.2-0.3mpa
12. Working pressure: nitrogen 0.1-0.15mpa oxygen 0.1-0.15mpa oxygen/nitrogen mixed gas inlet: including pressure regulator valve, flow control valve, gas filter and mixing chamber.
13. The sample holder can be used for soft and hard plastics, textiles, fire doors, etc
14. Propane (butane) ignition system, flame length 5mm-60mm can be adjusted freely
15. Gas: nitrogen and oxygen for industrial use with purity of > 99%;(user supplied).
16. Power requirements: AC220 (±10%) V, 50HZ
17. Maximum working power: 50W
18. Igniter: made of a metal, end diameter Φ 2 ± 1 mm nozzle, can ignite sample in combustion tube, the flame length: 16 ±4 mm, the size is adjustable
19. Self-supporting material sample holder: it can be fixed in the position of the axis of combustion cylinder and can hold the sample vertically
20. Non-self-supporting material sample holder: two vertical edges of the sample can be fixed on the frame at the same time (optional for non-self-supporting materials such as textiles and films).

LR-3A Digital Oxygen Index Tester(Have temperature controller)

Iii. Chassis and part of the structure:

1. Control box: CNC machine tool processing molding, electrostatic spraying, beautiful, anti-rust and anti-corrosion.The control part is separately controlled from the test part
2. The combustion tube: high temperature resistant high quality quartz glass tube (inner ￠75 mm, 480 mm) long export inner diameter: phi 40 mm
3. Sample fixture: self-supporting fixture, and can hold the sample vertically;(optional non-self-supporting style frame), two sets of style clips meet different test requirements;Style clip plug type, style and style clip more simple
4. The end of a long pole igniter tube hole diameter ￠2 ± 1 mm, igniter flame length (5 -) 50 mm can be arbitrary adjustable
5. design standard: GB/T 2406.2-2009 GB/T 2406.1-2008

Standards: ASTM D 2863, ISO 4589-2, NES 714 GB/T 5454 GB/T 10707 GB/T 8924-2005 GB/T 16581-1996 NB/SH/T 0815-2010 TB/T 2919-1998 IEC 61144-1992 ISO 15705-2002 ISO 4589-2-1996

LR-3A Digital Oxygen Index Tester(Have temperature controller)

Vi. Packing list:

1. 1 host
2. One set of combustion cylinder
3. One igniter
4. One power cord
5. Nylon tube Ф 4 1.2 meters (column connection combustion with the host)
6. Several sealing rings
7. One set of tapered sample holder
8. One metal mesh (put into the combustion column)
9. One plastic air outlet plate
10. 2 rubber tubes
11. One M10 x 1 inner connector screw (connected to the inner combustion column)
12. One M10 x 1 connector nut (connecting to the main machine).
13. One copy of the instruction manual
14. One non-self-supporting sample holder (optional)